1.When a one soccer(football in Brittish English) or hockey player scores 3 goals in a single game(related to a similarly name feat in cricket, probably a reference to the magic trick of pulling a rabbit out of a hat)

2.any improbable accomplishment
The guy just did a hat trick.
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To sleep with 3 guys from the same fraternity or 3 girls from the same sorority.
Dude I can't believe you finally got the hat trick with that house!
by somerandomperson1 July 1, 2010
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Giving a girl 3 orgasms in on session
Last night was unreal.... John fucked the shit out of me.... gave me a hat trick!
by johnnyb3good November 30, 2016
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A shit that requires 3 flushes to account for the waste.
I had to pull a hat-trick because of those spicy enchiladas.
by TwoPiece November 14, 2016
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1) receiving three blowjobs in one night
Dude you won't believe this...I got the hat trick last night from that one bitch.
by BigSexy22 April 2, 2008
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Taking a dump, beating off, and eating a party sub, simultaneously.
Chris Farley died performing a hat trick.
by shitforbrains2 September 5, 2008
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getting vaginal, oral and anal all in the same night
by Anonymous August 29, 2003
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